1.Login to Production.
2.Edit company say 'Tech America for Hspl'
3.Generate two separate IRS 1095-C report
4.Finalize one of them.
5.Select one Report for consolidating download [From ACA 1095C Acknowledgement].
6.Download the report
6.Finalize another report.
7.Select the another report from [ACA 1095C Acknowledgement]

Actual: Received server error
Expected: There should not be any server error.

Attaching screen shot for more information,

Error log is as follows
Action Name : GetACA1095CAcknowledgementList Model : System.Web.Mvc.HandleErrorInfo Controller : ACA Exception : StartIndex cannot be less than zero. Parameter name: startIndex Stack Trace : at System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy) at System.String.Substring(Int32 startIndex, Int32 length) at System.String.Substring(Int32 startIndex) at ASP.Page_Areas_ACA_Views_ACA_ACACompanyCustomizationGridPV_cshtml.Execute() in d:\WORKTERRA Web\BenAdmin\Areas\ACA\Views\ACA\ACACompanyCustomization_GridPV.cshtml:line 127 at System.Web.WebPages.WebPageBase.ExecutePageHierarchy() at System.Web.Mvc.WebViewPage.ExecutePageHierarchy() at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) at System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.<>cDisplayClass1a.<InvokeActionResultWithFilters>b17() at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) at System.Web.Mvc.ControllerActionInvoker.<>cDisplayClass1a.<>cDisplayClass1c.<InvokeActionResultWithFilters>b19() at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) at System.Web.Mvc.ControllerActionInvoker.<>cDisplayClass1a.<>cDisplayClass1c.<InvokeActionResultWithFilters>b_19() at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)